source: MondoRescue/trunk/mondo/mondo/common/libmondo-files.c@ 808

Last change on this file since 808 was 808, checked in by Bruno Cornec, 18 years ago

merge -r793:807 $SVN_M/branches/stable
src => common for the moment it's easier to manage merges
  • Property svn:keywords set to Id
File size: 34.6 KB
Line 
1/* $Id: libmondo-files.c 808 2006-09-22 21:12:37Z bruno $
2 * file manipulation
3*/
4
5/**
6 * @file
7 * Functions to manipulate files.
8 */
9
10
11#include "my-stuff.h"
12#include "mondostructures.h"
13#include "libmondo-files.h"
14
15#include "libmondo-tools-EXT.h"
16#include "newt-specific-EXT.h"
17#include "libmondo-devices-EXT.h"
18#include "libmondo-fork-EXT.h"
19#include "libmondo-string-EXT.h"
20
21/*@unused@*/
22//static char cvsid[] = "$Id: libmondo-files.c 808 2006-09-22 21:12:37Z bruno $";
23
24extern char **err_log_lines;
25
26extern int g_currentY;
27extern int g_noof_log_lines;
28extern char *g_mondo_home;
29
30/**
31 * @addtogroup fileGroup
32 * @{
33 */
34/**
35 * Get an md5 checksum of the specified file.
36 * @param filename The file to checksum.
37 * @return The 32-character ASCII representation of the 128-bit checksum.
38 * @note The returned string points to static storage that will be overwritten with each call.
39 */
40char *calc_checksum_of_file(char *filename)
41{
42 /*@ buffers ***************************************************** */
43 static char *output = NULL;
44 char *command;
45 char *tmp;
46 size_t n = 0;
47
48 /*@ pointers **************************************************** */
49 char *p;
50 FILE *fin;
51
52 /*@ initialize pointers ***************************************** */
53
54 p = output;
55
56 /*@************************************************************** */
57
58 assert_string_is_neither_NULL_nor_zerolength(filename);
59
60 if (does_file_exist(filename)) {
61 asprintf(&command, "md5sum \"%s\"", filename);
62 fin = popen(command, "r");
63 paranoid_free(command);
64
65 if (fin) {
66 (void) getline(&output, &n, fin);
67 p = strchr(output, ' ');
68 paranoid_pclose(fin);
69 }
70 } else {
71 asprintf(&tmp, "File '%s' not found; cannot calc checksum",
72 filename);
73 log_it(tmp);
74 paranoid_free(tmp);
75 }
76 if (p) {
77 *p = '\0';
78 }
79 return (output);
80}
81
82
83/**
84 * Get the number of lines in @p filename.
85 * @param filename The file to count lines in.
86 * @return The number of lines in @p filename.
87 * @bug This function uses the shell and "wc -l"; it should probably be rewritten in C.
88 */
89long count_lines_in_file(char *filename)
90{
91
92 /*@ buffers ***************************************************** */
93 char *command;
94 char *incoming = NULL;
95 char *tmp;
96
97 /*@ long ******************************************************** */
98 long noof_lines = -1L;
99
100 /*@ int ******************************************************** */
101 size_t n = 0;
102
103 /*@ pointers **************************************************** */
104 FILE *fin;
105
106 assert_string_is_neither_NULL_nor_zerolength(filename);
107 if (!does_file_exist(filename)) {
108 asprintf(&tmp,
109 "%s does not exist, so I cannot found the number of lines in it",
110 filename);
111 log_it(tmp);
112 paranoid_free(tmp);
113 return (0);
114 }
115 asprintf(&command, "cat %s | wc -l", filename);
116 if (!does_file_exist(filename)) {
117 return (-1);
118 }
119 fin = popen(command, "r");
120 paranoid_free(command);
121
122 if (fin) {
123 if (feof(fin)) {
124 noof_lines = 0;
125 } else {
126 (void) getline(&incoming, &n, fin);
127 while (strlen(incoming) > 0
128 && incoming[strlen(incoming) - 1] < 32) {
129 incoming[strlen(incoming) - 1] = '\0';
130 }
131 noof_lines = atol(incoming);
132 paranoid_free(incoming);
133 }
134 paranoid_pclose(fin);
135 }
136 return (noof_lines);
137}
138
139
140/**
141 * Check for existence of given @p filename.
142 * @param filename The file to check for.
143 * @return TRUE if it exists, FALSE otherwise.
144 */
145bool does_file_exist(char *filename)
146{
147
148 /*@ structures ************************************************** */
149 struct stat buf;
150
151 /*@************************************************************** */
152
153 assert(filename != NULL);
154
155 if (lstat(filename, &buf)) {
156 log_msg(20, "%s does not exist", filename);
157 return (FALSE);
158 } else {
159 log_msg(20, "%s exists", filename);
160 return (TRUE);
161 }
162}
163
164
165/**
166 * Modify @p inout (a file containing a list of files) to only contain files
167 * that exist.
168 * @param inout The filelist to operate on.
169 * @note The original file is renamed beforehand, so it will not be accessible
170 * while the modification is in progress.
171 */
172void exclude_nonexistent_files(char *inout)
173{
174 char *infname;
175 char *outfname;
176 char *tmp;
177 char *incoming = NULL;
178
179 /*@ int ********************************************************* */
180 int i;
181 size_t n = 0;
182
183 /*@ pointers **************************************************** */
184 FILE *fin, *fout;
185
186
187 /*@ end vars *********************************************************** */
188
189 assert_string_is_neither_NULL_nor_zerolength(inout);
190
191 asprintf(&infname, "%s.in", inout);
192
193 asprintf(&tmp, "cp -f %s %s", inout, infname);
194 run_program_and_log_output(tmp, FALSE);
195 paranoid_free(tmp);
196
197 if (!(fin = fopen(infname, "r"))) {
198 log_OS_error("Unable to openin infname");
199 paranoid_free(infname);
200 return;
201 }
202
203 asprintf(&outfname, "%s", inout);
204 if (!(fout = fopen(outfname, "w"))) {
205 log_OS_error("Unable to openout outfname");
206 paranoid_free(outfname);
207 return;
208 }
209 paranoid_free(outfname);
210
211 for (getline(&incoming, &n, fin); !feof(fin);
212 getline(&incoming, &n, fin)) {
213 i = strlen(incoming) - 1;
214 if (i >= 0 && incoming[i] < 32) {
215 incoming[i] = '\0';
216 }
217 if (does_file_exist(incoming)) {
218 fprintf(fout, "%s\n", incoming);
219 } else {
220 asprintf(&tmp, "Excluding '%s'-nonexistent\n", incoming);
221 log_it(tmp);
222 paranoid_free(tmp);
223 }
224 }
225 paranoid_free(incoming);
226 paranoid_fclose(fout);
227 paranoid_fclose(fin);
228 unlink(infname);
229 paranoid_free(infname);
230}
231
232
233/**
234 * Attempt to find the user's kernel by calling Mindi.
235 * If Mindi can't find the kernel, ask user. If @p kernel is not empty,
236 * don't do anything.
237 * @param kernel Where to put the found kernel.
238 * @return 0 for success, 1 for failure.
239 */
240int figure_out_kernel_path_interactively_if_necessary(char *kernel)
241{
242 char *tmp = NULL;
243 char *command = NULL;
244
245 if (kernel == NULL) {
246 kernel = call_program_and_get_last_line_of_output
247 ("mindi --findkernel 2> /dev/null");
248 }
249 // If we didn't get anything back, check whether mindi raised a fatal error
250 if (kernel == NULL) {
251 asprintf(&command, "grep 'Fatal error' /var/log/mindi.log");
252 tmp = call_program_and_get_last_line_of_output(command);
253 if (strlen(tmp) > 1) {
254 popup_and_OK(tmp);
255 fatal_error("Mindi gave a fatal error. Please check '/var/log/mindi.log'.");
256 }
257 paranoid_free(command);
258 paranoid_free(tmp);
259 }
260
261 if (kernel != NULL) {
262 log_it("Calling Mindi with kernel path of '%s'", kernel);
263 } else {
264 log_it("Calling Mindi without kernel, so asking one");
265 }
266
267 while (kernel == NULL) {
268 if (!ask_me_yes_or_no
269 (_("Kernel not found or invalid. Choose another?"))) {
270 return (1);
271 }
272 if (!popup_and_get_string
273 (_("Kernel path"),
274 _("What is the full path and filename of your kernel, please?"),
275 kernel)) {
276 fatal_error
277 ("Kernel not found. Please specify with the '-k' flag.");
278 }
279 log_it("User says kernel is at %s", kernel);
280 }
281 return (0);
282}
283
284
285/**
286 * Find location of specified executable in user's PATH.
287 * @param fname The basename of the executable to search for (e.g. @c afio).
288 * @return The full path to the executable, or "" if it does not exist, or NULL if @c file could not be found.
289 * @note The returned string points to static storage that will be overwritten with each call.
290 * @bug The checks with @c file and @c dirname seem pointless. If @c incoming is "", then you're calling
291 * <tt>dirname 2\>/dev/null</tt> or <tt>file 2\>/dev/null | cut -d':' -f1 2\>/dev/null</tt>, which basically amounts
292 * to nothing.
293 */
294char *find_home_of_exe(char *fname)
295{
296 /*@ buffers ********************* */
297 char *output = NULL;
298 char *incoming = NULL;
299 char *command = NULL;
300
301 /*@******************************* */
302
303 assert_string_is_neither_NULL_nor_zerolength(fname);
304
305 asprintf(&command, "which %s 2> /dev/null", fname);
306 incoming = call_program_and_get_last_line_of_output(command);
307 paranoid_free(command);
308
309 if (incoming == NULL) {
310 if (system("which file > /dev/null 2> /dev/null")) {
311 return (NULL); // forget it :)
312 }
313 asprintf(&command,
314 "file %s 2> /dev/null | cut -d':' -f1 2> /dev/null",
315 incoming);
316 paranoid_free(incoming);
317
318 incoming = call_program_and_get_last_line_of_output(command);
319 paranoid_free(command);
320 }
321 if (incoming == NULL) // yes, it is == '\0' twice, not once :)
322 {
323 asprintf(&command, "dirname %s 2> /dev/null", incoming);
324 paranoid_free(incoming);
325
326 incoming = call_program_and_get_last_line_of_output(command);
327 paranoid_free(command);
328 }
329 output = incoming;
330
331 if (output != NULL && does_file_exist(output)) {
332 log_msg(4, "find_home_of_exe () --- Found %s at %s", fname, output);
333 } else {
334 paranoid_free(output);
335 log_msg(4, "find_home_of_exe() --- Could not find %s", fname);
336 }
337 return (output);
338}
339
340
341/**
342 * Get the last sequence of digits surrounded by non-digits in the first 32k of
343 * a file.
344 * @param logfile The file to look in.
345 * @return The number found, or 0 if none.
346 */
347int get_trackno_from_logfile(char *logfile)
348{
349
350 /*@ pointers ********************************************************* */
351 FILE *fin;
352
353 /*@ int ************************************************************** */
354 int trackno = 0;
355 size_t len = 0;
356
357 /*@ buffer ************************************************************ */
358 char datablock[32701];
359
360 assert_string_is_neither_NULL_nor_zerolength(logfile);
361
362 if (!(fin = fopen(logfile, "r"))) {
363 log_OS_error("Unable to open logfile");
364 fatal_error("Unable to open logfile to read trackno");
365 }
366 len = fread(datablock, 1, 32700, fin);
367 paranoid_fclose(fin);
368 if (len <= 0) {
369 return (0);
370 }
371 for (; len > 0 && !isdigit(datablock[len - 1]); len--);
372 datablock[len--] = '\0';
373 for (; len > 0 && isdigit(datablock[len - 1]); len--);
374 trackno = atoi(datablock + len);
375 return (trackno);
376}
377
378
379/**
380 * Get a percentage from the last line of @p filename. We look for the string
381 * "% done" on the last line and, if we find it, grab the number before the last % sign.
382 * @param filename The file to get the percentage from.
383 * @return The percentage found, or 0 for error.
384 */
385int grab_percentage_from_last_line_of_file(char *filename)
386{
387
388 char *lastline = NULL;
389 char *command = NULL;
390 char *p = NULL;
391 int i;
392
393 for (i = g_noof_log_lines - 1;
394 i >= 0 && !strstr(err_log_lines[i], "% Done")
395 && !strstr(err_log_lines[i], "% done"); i--);
396 if (i < 0) {
397 asprintf(&command,
398 "tail -n3 %s | grep -Fi \"%c\" | tail -n1 | awk '{print $0;}'",
399 filename, '%');
400 lastline = call_program_and_get_last_line_of_output(command);
401 paranoid_free(command);
402 if (!lastline) {
403 return (0);
404 }
405 } else {
406 asprintf(&lastline, err_log_lines[i]);
407 }
408
409 p = strrchr(lastline, '%');
410 if (p) {
411 *p = '\0';
412 }
413 if (!p) {
414 paranoid_free(lastline);
415 return (0);
416 }
417 *p = '\0';
418 for (p--; *p != ' ' && p != lastline; p--);
419 if (p != lastline) {
420 p++;
421 }
422 i = atoi(p);
423 paranoid_free(lastline);
424
425 return (i);
426}
427
428
429/**
430 * Return the last line of @p filename.
431 * @param filename The file to get the last line of.
432 * @return The last line of the file.
433 * @note The returned string points to static storage that will be overwritten with each call.
434 */
435char *last_line_of_file(char *filename)
436{
437 /*@ buffers ***************************************************** */
438 char *output = NULL;
439 char *command = NULL;
440 char *tmp = NULL;
441
442 /*@ pointers **************************************************** */
443 FILE *fin;
444 size_t n = 0;
445
446 /*@ end vars **************************************************** */
447
448 if (!does_file_exist(filename)) {
449 asprintf(&tmp, _("Tring to get last line of nonexistent file (%s)"),
450 filename);
451 log_it(tmp);
452 paranoid_free(tmp);
453 return (NULL);
454 }
455 asprintf(&command, "tail -n1 %s", filename);
456 fin = popen(command, "r");
457 paranoid_free(command);
458
459 getline(&output, &n, fin);
460 paranoid_pclose(fin);
461 while (strlen(output) > 0 && output[strlen(output) - 1] < 32) {
462 output[strlen(output) - 1] = '\0';
463 }
464 return (output);
465}
466
467
468/**
469 * Get the length of @p filename in bytes.
470 * @param filename The file to get the length of.
471 * @return The length of the file, or -1 for error.
472 */
473off_t length_of_file(char *filename)
474{
475 /*@ pointers *************************************************** */
476 FILE *fin;
477
478 /*@ long long ************************************************* */
479 off_t length;
480
481 fin = fopen(filename, "r");
482 if (!fin) {
483 log_it("filename=%s", filename);
484 log_OS_error("Unable to openin filename");
485 return (-1);
486 }
487 fseeko(fin, 0, SEEK_END);
488 length = ftello(fin);
489 paranoid_fclose(fin);
490 return (length);
491}
492
493
494/**
495 * Create the directory @p outdir_fname and all parent directories. Equivalent to <tt>mkdir -p</tt>.
496 * @param outdir_fname The directory to create.
497 * @return The return value of @c mkdir.
498 */
499/* BERLIOS: This function shouldn't call system at all */
500int make_hole_for_dir(char *outdir_fname)
501{
502 char *tmp;
503 int res = 0;
504
505 assert_string_is_neither_NULL_nor_zerolength(outdir_fname);
506 asprintf(&tmp, "mkdir -p %s", outdir_fname);
507 res = system(tmp);
508 paranoid_free(tmp);
509 return (res);
510}
511
512
513/**
514 * Create the parent directories of @p outfile_fname.
515 * @param outfile_fname The file to make a "hole" for.
516 * @return 0, always.
517 * @bug Return value unnecessary.
518 */
519/* BERLIOS: This function shouldn't call system at all */
520int make_hole_for_file(char *outfile_fname)
521{
522 /*@ buffer ****************************************************** */
523 char *command;
524
525 /*@ int ******************************************************** */
526 int res = 0;
527
528 /*@ end vars *************************************************** */
529
530 assert_string_is_neither_NULL_nor_zerolength(outfile_fname);
531 assert(!strstr(outfile_fname, MNT_CDROM));
532 assert(!strstr(outfile_fname, "/dev/cdrom"));
533
534 asprintf(&command, "mkdir -p \"%s\" 2> /dev/null", outfile_fname);
535 res += system(command);
536 paranoid_free(command);
537
538 asprintf(&command, "rmdir \"%s\" 2> /dev/null", outfile_fname);
539 res += system(command);
540 paranoid_free(command);
541
542 asprintf(&command, "rm -f \"%s\" 2> /dev/null", outfile_fname);
543 res += system(command);
544 paranoid_free(command);
545 unlink(outfile_fname);
546 return (0);
547}
548
549
550/**
551 * Get the number of lines in @p filelist_fname that contain the string @p wildcard.
552 * @param filelist_fname The file to search through.
553 * @param wildcard The string to search for. This is @e not a shell glob or a regular expression.
554 * @return The number of lines matched.
555 */
556long noof_lines_that_match_wildcard(char *filelist_fname, char *wildcard)
557{
558 /*@ long ******************************************************* */
559 long matches = 0;
560
561 /*@ pointers *************************************************** */
562 FILE *fin;
563
564 /*@ buffers **************************************************** */
565 char *incoming = NULL;
566
567 size_t n = 0;
568 /*@ end vars *************************************************** */
569
570
571 fin = fopen(filelist_fname, "r");
572
573 if (!fin) {
574 log_OS_error("Unable to openin filelist_fname");
575 return (0);
576 }
577 (void) getline(&incoming, &n, fin);
578 while (!feof(fin)) {
579 if (strstr(incoming, wildcard)) {
580 matches++;
581 }
582 (void) getline(&incoming, &n, fin);
583 }
584 paranoid_fclose(fin);
585 paranoid_free(incoming);
586 return (matches);
587}
588
589
590/**
591 * Register our PID in a file in /var/run.
592 * The PID will be put in /var/run/monitas-<tt>name_str</tt>.pid.
593 * @param pid 0 to remove file, anything else to create it.
594 * @param name_str The basename of the PID file (e.g. "mondo" or "server")
595 * @note This function does not provide support against multiple instances, unless you check for that yourself.
596 */
597void register_pid(pid_t pid, char *name_str)
598{
599 char *tmp;
600 char *lockfile_fname;
601 int res;
602 size_t n = 0;
603 FILE *fin;
604
605 asprintf(&lockfile_fname, "/var/run/monitas-%s.pid", name_str);
606 if (!pid) {
607 log_it("Unregistering PID");
608 if (unlink(lockfile_fname)) {
609 log_it("Error unregistering PID");
610 }
611 paranoid_free(lockfile_fname);
612 return;
613 }
614 if (does_file_exist(lockfile_fname)) {
615 if ((fin = fopen(lockfile_fname, "r"))) {
616 (void) getline(&tmp, &n, fin);
617 paranoid_fclose(fin);
618 } else {
619 log_OS_error("Unable to openin lockfile_fname");
620 }
621 pid = (pid_t) atol(tmp);
622 paranoid_free(tmp);
623
624 asprintf(&tmp, "ps %ld > /dev/null 2> /dev/null", (long int) pid);
625 res = system(tmp);
626 paranoid_free(tmp);
627 if (!res) {
628 log_it
629 ("I believe the daemon is already running. If it isn't, please delete %s and try again.",
630 lockfile_fname);
631 }
632 }
633 asprintf(&tmp, "echo %ld > %s 2> /dev/null", (long int) getpid(),
634 lockfile_fname);
635 paranoid_free(lockfile_fname);
636
637 if (system(tmp)) {
638 fatal_error("Cannot register PID");
639 }
640 paranoid_free(tmp);
641 return;
642}
643
644
645/**
646 * Determine the size (in KB) of @p dev in the mountlist in <tt>tmpdir</tt>/mountlist.txt.
647 * @param tmpdir The tempdir where the mountlist is stored.
648 * @param dev The device to search for.
649 * @return The size of the partition in KB.
650 */
651long size_of_partition_in_mountlist_K(char *tmpdir, char *dev)
652{
653 char *command = NULL;
654 char *sz_res = NULL;
655 long file_len_K = 0L;
656
657 asprintf(&command,
658 "grep '%s ' %s/mountlist.txt | head -n1 | awk '{print $4;}'",
659 dev, tmpdir);
660 log_it(command);
661 sz_res = call_program_and_get_last_line_of_output(command);
662 file_len_K = atol(sz_res);
663 log_msg(4, "%s --> %s --> %ld", command, sz_res, file_len_K);
664 paranoid_free(command);
665 paranoid_free(sz_res);
666 return (file_len_K);
667}
668
669
670/**
671 * Calculate the total size (in KB) of all the biggiefiles in this backup.
672 * @param bkpinfo The backup information structure. Only the @c bkpinfo->tmpdir field is used.
673 * @return The total size of all biggiefiles in KB.
674 */
675long size_of_all_biggiefiles_K(struct s_bkpinfo *bkpinfo)
676{
677 char *fname = NULL;
678 char *biggielist = NULL;
679 char *comment = NULL;
680 char *tmp = NULL;
681 char *command = NULL;
682
683 /*@ long ******************************************************** */
684 long scratchL = 0L;
685 long file_len_K = 0L;
686
687 /*@ pointers *************************************************** */
688 FILE *fin = NULL;
689 size_t n = 0;
690
691 /*@ end vars *************************************************** */
692
693 log_it("Calculating size of all biggiefiles (in total)");
694 asprintf(&biggielist, "%s/biggielist.txt", bkpinfo->tmpdir);
695 log_it("biggielist = %s", biggielist);
696 if (!(fin = fopen(biggielist, "r"))) {
697 log_OS_error
698 ("Cannot open biggielist. OK, so estimate is based on filesets only.");
699 } else {
700 log_msg(4, "Reading it...");
701 for (getline(&fname, &n, fin); !feof(fin);
702 getline(&fname, &n, fin)) {
703 if (fname[strlen(fname) - 1] <= 32) {
704 fname[strlen(fname) - 1] = '\0';
705 }
706 if (0 == strncmp(fname, "/dev/", 5)) {
707 if (is_dev_an_NTFS_dev(fname)) {
708 tmp = find_home_of_exe("ntfsresize");
709 if (!tmp) {
710 fatal_error("ntfsresize not found");
711 }
712 paranoid_free(tmp);
713
714 asprintf(&command, "ntfsresize --force --info %s|grep '^You might resize at '|cut -d' ' -f5", fname);
715 log_it("command = %s", command);
716 tmp = call_program_and_get_last_line_of_output(command);
717 paranoid_free(command);
718
719 log_it("res of it = %s", tmp);
720 file_len_K = atoll(tmp) / 1024L;
721 paranoid_free(tmp);
722 } else {
723 file_len_K = get_phys_size_of_drive(fname) * 1024L;
724 }
725 } else {
726 /* BERLIOS: more than long here ??? */
727 file_len_K = (long) (length_of_file(fname) / 1024);
728 }
729 if (file_len_K > 0) {
730 scratchL += file_len_K;
731 log_msg(4, "%s --> %ld K", fname, file_len_K);
732 }
733 asprintf(&comment,
734 "After adding %s, scratchL+%ld now equals %ld", fname,
735 file_len_K, scratchL);
736 log_msg(4, comment);
737 paranoid_free(comment);
738
739 if (feof(fin)) {
740 break;
741 }
742 }
743 paranoid_free(fname);
744 }
745 paranoid_free(biggielist);
746
747 log_it("Closing...");
748 paranoid_fclose(fin);
749 log_it("Finished calculating total size of all biggiefiles");
750 return (scratchL);
751}
752
753
754/**
755 * Determine the amount of space (in KB) occupied by a mounted CD.
756 * This can also be used to find the space used for other directories.
757 * @param mountpt The mountpoint/directory to check.
758 * @return The amount of space occupied in KB.
759 */
760long long space_occupied_by_cd(char *mountpt)
761{
762 /*@ buffer ****************************************************** */
763 char *tmp = NULL;
764 char *command = NULL;
765 long long llres;
766 size_t n = 0;
767 /*@ pointers **************************************************** */
768 char *p = NULL;
769 FILE *fin = NULL;
770
771 /*@ end vars *************************************************** */
772
773 asprintf(&command, "du -sk %s", mountpt);
774 fin = popen(command, "r");
775 paranoid_free(command);
776
777 (void) getline(&tmp, &n, fin);
778 paranoid_pclose(fin);
779 p = strchr(tmp, '\t');
780 if (p) {
781 *p = '\0';
782 }
783 for (p = tmp, llres = 0; *p != '\0'; p++) {
784 llres *= 10;
785 llres += (int) (*p - '0');
786 }
787 paranoid_free(tmp);
788 return (llres);
789}
790
791
792/**
793 * Update a CRC checksum to include another character.
794 * @param crc The original CRC checksum.
795 * @param c The character to add.
796 * @return The new CRC checksum.
797 * @ingroup utilityGroup
798 */
799unsigned int updcrc(unsigned int crc, unsigned int c)
800{
801 unsigned int tmp;
802 tmp = (crc >> 8) ^ c;
803 crc = (crc << 8) ^ crctttab[tmp & 255];
804 return crc;
805}
806
807
808/**
809 * Update a reverse CRC checksum to include another character.
810 * @param crc The original CRC checksum.
811 * @param c The character to add.
812 * @return The new CRC checksum.
813 * @ingroup utilityGroup
814 */
815unsigned int updcrcr(unsigned int crc, unsigned int c)
816{
817 unsigned int tmp;
818 tmp = crc ^ c;
819 crc = (crc >> 8) ^ crc16tab[tmp & 0xff];
820 return crc;
821}
822
823
824/**
825 * Check for an executable on the user's system; write a message to the
826 * screen and the log if we can't find it.
827 * @param fname The executable basename to look for.
828 * @return 0 if it's found, nonzero if not.
829 */
830int whine_if_not_found(char *fname)
831{
832 /*@ buffers *** */
833 char *command;
834 char *errorstr;
835 int res = 0;
836
837
838 asprintf(&command, "which %s > /dev/null 2> /dev/null", fname);
839 res = system(command);
840 paranoid_free(command);
841
842 if (res) {
843 asprintf(&errorstr,
844 _("Please install '%s'. I cannot find it on your system."),
845 fname);
846 log_to_screen(errorstr);
847 paranoid_free(errorstr);
848 log_to_screen
849 (_("There may be an hyperlink at http://www.mondorescue.org which"));
850 log_to_screen(_("will take you to the relevant (missing) package."));
851 return (1);
852 } else {
853 return (0);
854 }
855}
856
857
858/**
859 * Create a data file at @p fname containing @p contents.
860 * The data actually can be multiple lines, despite the name.
861 * @param fname The file to create.
862 * @param contents The data to put in it.
863 * @return 0 for success, 1 for failure.
864 */
865int write_one_liner_data_file(char *fname, char *contents)
866{
867 /*@ pointers *************************************************** */
868 FILE *fout;
869 int res = 0;
870
871 /*@ end vars *************************************************** */
872
873 assert_string_is_neither_NULL_nor_zerolength(fname);
874 if (!contents) {
875 log_it("%d: Warning - writing NULL to %s", __LINE__, fname);
876 }
877 if (!(fout = fopen(fname, "w"))) {
878 log_it("fname=%s");
879 log_OS_error("Unable to openout fname");
880 return (1);
881 }
882 fprintf(fout, "%s\n", contents);
883 paranoid_fclose(fout);
884 return (res);
885}
886
887
888/**
889 * Read @p fname into @p contents.
890 * @param fname The file to read.
891 * @param contents Where to put its contents.
892 * @return 0 for success, nonzero for failure.
893 */
894int read_one_liner_data_file(char *fname, char *contents)
895{
896 /*@ pointers *************************************************** */
897 FILE *fin;
898 int res = 0;
899 int i;
900
901 /*@ end vars *************************************************** */
902
903 assert_string_is_neither_NULL_nor_zerolength(fname);
904 if (!contents) {
905 log_it("%d: Warning - reading NULL from %s", __LINE__, fname);
906 }
907 if (!(fin = fopen(fname, "r"))) {
908 log_it("fname=%s", fname);
909 log_OS_error("Unable to openin fname");
910 return (1);
911 }
912 fscanf(fin, "%s\n", contents);
913 i = strlen(contents);
914 if (i > 0 && contents[i - 1] < 32) {
915 contents[i - 1] = '\0';
916 }
917 paranoid_fclose(fin);
918 return (res);
919}
920
921
922/**
923 * Copy the files that Mondo/Mindi need to run to the scratchdir or tempdir.
924 * Currently this includes: copy Mondo's home directory to scratchdir, untar "mondo_home/payload.tgz"
925 * if it exists, copy LAST-FILELIST-NUMBER to scratchdir, copy mondorestore
926 * and post-nuke.tgz (if it exists) to tmpdir, and run "hostname > scratchdir/HOSTNAME".
927 * @param bkpinfo The backup information structure. Fields used:
928 * - @c bkpinfo->postnuke_tarball
929 * - @c bkpinfo->scratchdir
930 * - @c bkpinfo->tmpdir
931 */
932void copy_mondo_and_mindi_stuff_to_scratchdir(struct s_bkpinfo *bkpinfo)
933{
934 /*@ Char buffers ** */
935 char *command;
936 char *tmp;
937 char old_pwd[MAX_STR_LEN];
938
939 mvaddstr_and_log_it(g_currentY, 0,
940 "Copying Mondo's core files to the scratch directory");
941
942 /* BERLIOS: Why do we need to do it here as well ? */
943 log_msg(4, "g_mondo_home='%s'", g_mondo_home);
944 if ((g_mondo_home == NULL) || strlen(g_mondo_home) < 2) {
945 paranoid_free(g_mondo_home);
946 g_mondo_home = find_and_store_mondoarchives_home();
947 }
948 asprintf(&command, CP_BIN " --parents -pRdf %s %s", g_mondo_home,
949 bkpinfo->scratchdir);
950
951 log_msg(4, "command = %s", command);
952 if (run_program_and_log_output(command, 1)) {
953 fatal_error("Failed to copy Mondo's stuff to scratchdir");
954 }
955 paranoid_free(command);
956
957 asprintf(&tmp, "%s/payload.tgz", g_mondo_home);
958
959 /* i18n */
960 asprintf(&command, CP_BIN " --parents /usr/share/locale/*/LC_MESSAGES/mondo.mo %s",bkpinfo->scratchdir);
961 log_msg(4, "command = %s", command);
962 run_program_and_log_output(command, 1);
963 paranoid_free(command);
964
965 if (does_file_exist(tmp)) {
966 log_it("Untarring payload %s to scratchdir %s", tmp,
967 bkpinfo->scratchdir);
968 (void) getcwd(old_pwd, MAX_STR_LEN - 1);
969 chdir(bkpinfo->scratchdir);
970 asprintf(&command, "tar -zxvf %s", tmp);
971 if (run_program_and_log_output(command, FALSE)) {
972 fatal_error("Failed to untar payload");
973 }
974 paranoid_free(command);
975 chdir(old_pwd);
976 }
977 paranoid_free(tmp);
978
979 asprintf(&command, "cp -f %s/LAST-FILELIST-NUMBER %s", bkpinfo->tmpdir,
980 bkpinfo->scratchdir);
981 if (run_program_and_log_output(command, FALSE)) {
982 fatal_error("Failed to copy LAST-FILELIST-NUMBER to scratchdir");
983 }
984 paranoid_free(command);
985
986 tmp = call_program_and_get_last_line_of_output("which mondorestore");
987 if (!tmp) {
988 fatal_error
989 ("'which mondorestore' returned null. Where's your mondorestore? `which` can't find it. That's odd. Did you install mondorestore?");
990 }
991 asprintf(&command, "cp -f %s %s", tmp, bkpinfo->tmpdir);
992 paranoid_free(tmp);
993
994 if (run_program_and_log_output(command, FALSE)) {
995 fatal_error("Failed to copy mondorestore to tmpdir");
996 }
997 paranoid_free(command);
998
999 asprintf(&command, "hostname > %s/HOSTNAME", bkpinfo->scratchdir);
1000 paranoid_system(command);
1001 paranoid_free(command);
1002
1003 if (bkpinfo->postnuke_tarball) {
1004 asprintf(&command, "cp -f %s %s/post-nuke.tgz",
1005 bkpinfo->postnuke_tarball, bkpinfo->tmpdir);
1006 if (run_program_and_log_output(command, FALSE)) {
1007 fatal_error("Unable to copy post-nuke tarball to tmpdir");
1008 }
1009 paranoid_free(command);
1010 }
1011
1012 mvaddstr_and_log_it(g_currentY++, 74, "Done.");
1013}
1014
1015
1016/**
1017 * Store the client's NFS configuration in files to be restored at restore-time.
1018 * Assumes that @c bkpinfo->media_type = nfs, but does not check for this.
1019 * @param bkpinfo The backup information structure. Fields used:
1020 * - @c nfs_mount
1021 * - @c nfs_remote_dir
1022 * - @c tmpdir
1023 */
1024void store_nfs_config(struct s_bkpinfo *bkpinfo)
1025{
1026
1027 /*@ buffers ******** */
1028 char *nfs_dev = NULL;
1029 char *mac_addr = NULL;
1030 char *nfs_mount = NULL;
1031 char *nfs_client_ipaddr = NULL;
1032 char *nfs_client_netmask = NULL;
1033 char *nfs_client_broadcast = NULL;
1034 char *nfs_client_defgw = NULL;
1035 char *nfs_server_ipaddr = NULL;
1036 char *tmp = NULL;
1037 char *command = NULL;
1038
1039 /*@ pointers ***** */
1040 char *p;
1041
1042 log_it("Storing NFS configuration");
1043 asprintf(&tmp, bkpinfo->nfs_mount);
1044 p = strchr(tmp, ':');
1045 if (!p) {
1046 fatal_error
1047 ("NFS mount doesn't have a colon in it, e.g. 192.168.1.4:/home/nfs");
1048 }
1049 *(p++) = '\0';
1050 asprintf(&nfs_server_ipaddr, tmp);
1051 paranoid_free(tmp);
1052
1053 asprintf(&nfs_mount, p);
1054 /* BERLIOS : there is a bug #67 here as it only considers the first NIC */
1055 asprintf(&command,
1056 "ifconfig | tr '\n' '#' | sed s/##// | tr '#' ' ' | tr '' '\n' | head -n1 | cut -d' ' -f1");
1057 nfs_dev = call_program_and_get_last_line_of_output(command);
1058 paranoid_free(command);
1059
1060 asprintf(&command,
1061 "ifconfig | tr '\n' '#' | sed s/##// | tr '#' ' ' | tr '' '\\n' | head -n1 | tr -s '\t' ' ' | cut -d' ' -f7 | cut -d':' -f2");
1062 nfs_client_ipaddr = call_program_and_get_last_line_of_output(command);
1063 paranoid_free(command);
1064
1065 asprintf(&command,
1066 "ifconfig | tr '\n' '#' | sed s/##// | tr '#' ' ' | tr '' '\\n' | head -n1 | tr -s '\t' ' ' | cut -d' ' -f9 | cut -d':' -f2");
1067 nfs_client_netmask = call_program_and_get_last_line_of_output(command);
1068 paranoid_free(command);
1069
1070 asprintf(&command,
1071 "ifconfig | tr '\n' '#' | sed s/##// | tr '#' ' ' | tr '' '\\n' | head -n1 | tr -s '\t' ' ' | cut -d' ' -f8 | cut -d':' -f2");
1072 nfs_client_broadcast = call_program_and_get_last_line_of_output(command);
1073 paranoid_free(command);
1074
1075 asprintf(&command,
1076 "route -n | grep '^0.0.0.0' | awk '{print $2}'");
1077 nfs_client_defgw = call_program_and_get_last_line_of_output(command);
1078 paranoid_free(command);
1079
1080 asprintf(&tmp,
1081 "nfs_client_ipaddr=%s; nfs_client_netmask=%s; nfs_server_ipaddr=%s; nfs_mount=%s; nfs_client_defgw=%s; ",
1082 nfs_client_ipaddr, nfs_client_netmask, nfs_server_ipaddr, nfs_mount, nfs_client_defgw);
1083 paranoid_free(nfs_mount);
1084 log_it(tmp);
1085 paranoid_free(tmp);
1086
1087 if (strlen(nfs_dev) < 2) {
1088 fatal_error
1089 ("Unable to find ethN (eth0, eth1, ...) adapter via NFS mount you specified.");
1090 }
1091 make_hole_for_dir("/var/cache/mondo-archive");
1092 /********
1093 * If the NFS device that found above is a bonded device,
1094 * we need to replace it with an ethN device or the
1095 * networking will not start during an NFS restore.
1096 *
1097 * If the NFS device in nfs_dev begins with the word "bond",
1098 * look for the corresponding slave ethN device and copy it to nfs_dev.
1099 * Using the common MAC address
1100 ********/
1101 if (!strncmp(nfs_dev, "bond", 4)) {
1102 log_to_screen("Found bonding device %s; looking for corresponding ethN slave device\n", nfs_dev);
1103 asprintf(&command,
1104 "ifconfig %s | awk '{print $5}'", nfs_dev);
1105 mac_addr = call_program_and_get_last_line_of_output(command);
1106 asprintf(&command,
1107 "ifconfig | grep -E '%s' | head -n1 | cut -d' ' -f1", mac_addr);
1108 paranoid_free(nfs_dev);
1109 nfs_dev = call_program_and_get_last_line_of_output(command);
1110 paranoid_free(command);
1111 paranoid_free(mac_addr);
1112
1113 log_to_screen("Replacing it with %s\n", nfs_dev);
1114 }
1115
1116 asprintf(&tmp, "%s/NFS-DEV", bkpinfo->tmpdir);
1117 write_one_liner_data_file(tmp, nfs_dev);
1118 paranoid_free(nfs_dev);
1119 paranoid_free(tmp);
1120
1121 asprintf(&tmp, "%s/NFS-CLIENT-IPADDR", bkpinfo->tmpdir);
1122 write_one_liner_data_file(tmp, nfs_client_ipaddr);
1123 paranoid_free(nfs_client_ipaddr);
1124 paranoid_free(tmp);
1125
1126 asprintf(&tmp, "%s/NFS-CLIENT-NETMASK", bkpinfo->tmpdir);
1127 write_one_liner_data_file(tmp, nfs_client_netmask);
1128 paranoid_free(nfs_client_netmask);
1129 paranoid_free(tmp);
1130
1131 asprintf(&tmp, "%s/NFS-CLIENT-DEFGW", bkpinfo->tmpdir);
1132 write_one_liner_data_file(tmp, nfs_client_defgw);
1133 paranoid_free(nfs_client_defgw);
1134 paranoid_free(tmp);
1135
1136 asprintf(&tmp, "%s/NFS-CLIENT-BROADCAST", bkpinfo->tmpdir);
1137 write_one_liner_data_file(tmp, nfs_client_broadcast);
1138 paranoid_free(nfs_client_broadcast);
1139 paranoid_free(tmp);
1140
1141 asprintf(&tmp, "%s/NFS-SERVER-IPADDR", bkpinfo->tmpdir);
1142 write_one_liner_data_file(tmp, nfs_server_ipaddr);
1143 paranoid_free(nfs_server_ipaddr);
1144 paranoid_free(tmp);
1145
1146 asprintf(&tmp, "%s/NFS-SERVER-MOUNT", bkpinfo->tmpdir);
1147 write_one_liner_data_file(tmp, bkpinfo->nfs_mount);
1148 paranoid_free(tmp);
1149
1150 asprintf(&tmp, "%s/NFS-SERVER-PATH", bkpinfo->tmpdir);
1151 write_one_liner_data_file(tmp, bkpinfo->nfs_remote_dir);
1152 paranoid_free(tmp);
1153
1154 asprintf(&tmp, "%s/ISO-PREFIX", bkpinfo->tmpdir);
1155 write_one_liner_data_file(tmp, bkpinfo->prefix);
1156 paranoid_free(tmp);
1157
1158 log_it("Finished storing NFS configuration");
1159}
1160
1161
1162/**
1163 * Determine the approximate number of media that the backup will take up,
1164 * and tell the user. The uncompressed size is estimated as size_of_all_biggiefiles_K()
1165 * plus (noof_sets x bkpinfo->optimal_set_size). The compression factor is estimated as
1166 * 2/3 for LZO and 1/2 for bzip2. The data is not saved anywhere. If there are any
1167 * "imagedevs", the estimate is not shown as it will be wildly inaccurate.
1168 * If there are more than 50 media estimated, the estimate will not be shown.
1169 * @param bkpinfo The backup information structure. Fields used:
1170 * - @c bkpinfo->backup_media_type
1171 * - @c bkpinfo->image_devs
1172 * - @c bkpinfo->media_size
1173 * - @c bkpinfo->optimal_set_size
1174 * - @c bkpinfo->use_lzo
1175 * @param noof_sets The number of filesets created.
1176 * @ingroup archiveGroup
1177 */
1178void
1179estimate_noof_media_required(struct s_bkpinfo *bkpinfo, long noof_sets)
1180{
1181 /*@ buffers *************** */
1182 char *tmp = NULL;
1183
1184 /*@ long long ************* */
1185 long long scratchLL;
1186
1187 if (bkpinfo->media_size[1] <= 0 || bkpinfo->backup_media_type == nfs) {
1188 log_to_screen("Number of media required: UNKNOWN");
1189 return;
1190 }
1191
1192 log_it("Estimating number of media required...");
1193 scratchLL =
1194 (long long) (noof_sets) * (long long) (bkpinfo->optimal_set_size)
1195 + (long long) (size_of_all_biggiefiles_K(bkpinfo));
1196 scratchLL = (scratchLL / 1024) / bkpinfo->media_size[1];
1197 scratchLL++;
1198 if (bkpinfo->use_lzo) {
1199 scratchLL = (scratchLL * 2) / 3;
1200 } else {
1201 scratchLL = scratchLL / 2;
1202 }
1203 if (!scratchLL) {
1204 scratchLL++;
1205 }
1206 if (scratchLL <= 1) {
1207 asprintf(&tmp,
1208 _("Your backup will probably occupy a single %s. Maybe two."),
1209 bkpinfo->backup_media_string);
1210 } else {
1211 asprintf(&tmp, _("Your backup will occupy approximately %s media."),
1212 number_to_text((int) (scratchLL + 1)));
1213 }
1214 if (!bkpinfo->image_devs && (scratchLL < 50)) {
1215 log_to_screen(tmp);
1216 }
1217 paranoid_free(tmp);
1218 return;
1219}
1220
1221
1222/**
1223 * Determine whether a file is compressed. This is done
1224 * by reading through the "do-not-compress-these" file distributed with Mondo.
1225 * @param filename The file to check.
1226 * @return TRUE if it's compressed, FALSE if not.
1227 */
1228bool is_this_file_compressed(char *filename)
1229{
1230 char *do_not_compress_these = NULL;
1231 char *tmp = NULL;
1232 char *p = NULL;
1233
1234 asprintf(&tmp, "%s/do-not-compress-these", g_mondo_home);
1235 if (!does_file_exist(tmp)) {
1236 paranoid_free(tmp);
1237 return (FALSE);
1238 }
1239 paranoid_free(tmp);
1240
1241 do_not_compress_these = last_line_of_file(tmp);
1242 for (p = do_not_compress_these; p != NULL; p++) {
1243 asprintf(&tmp, p);
1244 if (strchr(tmp, ' ')) {
1245 *(strchr(tmp, ' ')) = '\0';
1246 }
1247 if (!strcmp(strrchr(filename, '.'), tmp)) {
1248 paranoid_free(do_not_compress_these);
1249 paranoid_free(tmp);
1250 return (TRUE);
1251 }
1252 paranoid_free(tmp);
1253
1254 if (!(p = strchr(p, ' '))) {
1255 break;
1256 }
1257 }
1258 paranoid_free(do_not_compress_these);
1259 return (FALSE);
1260}
1261
1262
1263int mode_of_file(char *fname)
1264{
1265 struct stat buf;
1266
1267 if (lstat(fname, &buf)) {
1268 return (-1);
1269 } // error
1270 else {
1271 return (buf.st_mode);
1272 }
1273}
1274
1275
1276/**
1277 * Create a small script that mounts /boot, calls @c grub-install, and syncs the disks.
1278 * @param outfile Where to put the script.
1279 * @return 0 for success, 1 for failure.
1280 */
1281int make_grub_install_scriptlet(char *outfile)
1282{
1283 FILE *fout;
1284 char *tmp;
1285 int retval = 0;
1286
1287 if ((fout = fopen(outfile, "w"))) {
1288 fprintf(fout,
1289 "#!/bin/sh\n\nmount /boot > /dev/null 2> /dev/null\ngrub-install $@\nres=$?\nsync;sync;sync\nexit $res\n");
1290 paranoid_fclose(fout);
1291 log_msg(2, "Created %s", outfile);
1292 asprintf(&tmp, "chmod +x %s", outfile);
1293 paranoid_system(tmp);
1294 paranoid_free(tmp);
1295
1296 retval = 0;
1297 } else {
1298 retval = 1;
1299 }
1300 return (retval);
1301}
1302
1303/* @} - end fileGroup */
1304
1305void paranoid_alloc(char *alloc, char *orig)
1306{
1307 paranoid_free(alloc);
1308 asprintf(&alloc, orig);
1309}
1310
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